Download our research overview document here. Today, the idea that urban trees need real soil volume to reach maturity is no longer controversial — it’s widely accepted among urban foresters and landscape architects. We also recognize that providing that soil volume, especially with systems like Silva Cells, represents a meaningful upfront investment. But decades of… More
The Challenge of Limited Space As cities grow denser and redevelopment accelerates, space is becoming the defining constraint of modern design — and as hardscape surfaces increase, stormwater management becomes more critical. But traditional stormwater infrastructure requires generous footprints (like raingardens) or deep excavation (like large storage tanks): two conditions that are often unavailable in… More
Introduction People often ask us how Silva Cell grows large trees and treats stormwater. The truth is: it doesn’t. At least not by itself. Silva Cell isn’t some magical, mechanical device that generates roots or filters water on its own. Instead, it’s a simple yet powerful framework that lets nature perform at its best, even… More
Introduction Why are streetlights and sidewalks considered municipal assets — but not trees? Most cities manage detailed inventories of their physical infrastructure: light poles, sewer lines, benches, trash bins, snowplows. These things are logged, valued, maintained — and budgeted for. They’re viewed not just as integral components of the public realm, but as long-term investments… More
DOWNLOAD A 1-PAGE PDF VERSION OF THIS CONTENT HERE Future-Proofing Your Stormwater Projects The UK’s updated SuDS standards, released in June 2025, outline clear priorities for managing stormwater in new developments — these principles include managing runoff at the source, mimicking natural drainage, reducing flood risk, improving water quality, and supporting long-term biodiversity and amenity…. More
Introduction In traditional site design, managing stormwater often means carving out space for one massive underground tank. These vaults are designed to collect and hold stormwater until it can be slowly released or treated — but they come with major spatial and logistical challenges. In today’s urban environments, with space at a premium and infrastructure… More
What is the role of green infrastructure within stormwater management? This is an important question — and one that Sahil Sharma, stormwater engineer and founder of strmwtr inc, thoughtfully discusses in his recent chat with DeepRoot content manager Jacob Westlin. Below are some of his insightful themes and quotes — but be sure to check… More
Introduction One of the primary environmental challenges of new developments is the increase in impervious surfaces, which, when it rains, leads to more polluted stormwater runoff. Clean water is essential for human health, ecosystems, and sustainable cities — and when rain falls on streets, sidewalks, and rooftops, it picks up contaminants and carries them directly… More
Introduction For decades, cities have relied on gray infrastructure — stormwater pipes, culverts, and treatment plants — to manage urban stormwater. While these systems serve an essential function, they are increasingly overburdened, expensive to maintain, and ill-equipped to handle modern climate challenges. Heavy rainfall overwhelms drainage systems, pollutants flow freely into watersheds, and aging pipes… More
Increasingly Extreme Weather Extreme weather events are becoming more frequent and intense, with cities across the globe facing dangerous challenges from hurricanes, heavy rain, and flash flooding. The combination of climate change and rapid urbanization has made stormwater management a critical component of climate resilience. Traditional stormwater infrastructure, built to whisk water away as quickly… More
Introduction When competing for space in urban development, stormwater management solutions — particularly those such as “daylighted” raingardens with prohibitive footprints — often find themselves at the bottom of the priority list. And yet, as cities expand, impervious surfaces multiply, increasing runoff and overloading drainage systems. So, how do designers simultaneously satisfy development needs and… More
Stormwater Management: Conventional Wisdom The traditional approach to stormwater management in urban environments has been to treat it as a problem to be managed, a liability that cities must control to prevent flooding, pollution, and infrastructure damage. Cities have been built upon this principle: quickly removing runoff from urban areas, directing it into storm drains,… More
Soil. Stormwater. Sustainable Infrastructure.
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